Resistivity Minimum in Highly Frustrated Itinerant Magnets

Abstract

We study the transport properties of frustrated itinerant magnets comprising localized {\it classical} moments, which interact via exchange with the conduction electrons. Strong frustration stabilizes a liquidlike spin state, which extends down to temperatures well below the effective Ruderman-Kittel-Kasuya-Yosida interaction scale. The crossover into this state is characterized by spin structure factor enhancement at wave vectors smaller than twice the Fermi wave vector magnitude. The corresponding enhancement of electron scattering generates a resistivity upturn at decreasing temperatures.

8 pages, 6 figures

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• The Kernel Polynomial Method
• Real-space calculation of the conductivity tensor for disordered topological matter
• Absent pinch points and emergent clusters: further neighbour interactions in the pyrochlore Heisenberg antiferromagnet
• Novel magnetic orderings in the kagome Kondo-lattice model
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